The Fungi Which Cause Plant Disease 



By F. L. STEVENS 



Professor ot Plant Pathology in the University of Illinois 

 • 7^3 PP'y i^^^i^^>'^^^^y Svo, $4.00 



This volume introduces the student to the more impor- 

 tant cryptogamic parasites affecting economic plants in 

 the United States and provides adecjuate ke)'s and descrip- 

 tions for their identification. Technical description of 

 each division, order, family, genus, and species is given. 

 Many parasites not yet known in the United States are 

 briefly mentioned, especially those of greater importance, 

 or those which are likely to invade America. Non-para- 

 sitic groups closely related to those which are parasitic 

 have been included in the keys in order to give the student 

 a larger perspective. At least one illustration of each 

 genus which is of importance in the United States has 

 been included. Abundant citations to the more important 

 papers are given, so as to put the student in touch with 

 the literature of the subject. This is, however, the only 

 work in English covering this ground, and will, therefore, 

 be welcome to students who have previously been obliged 

 to rely solely upon very expensive treatises in Latin or 

 German, and upon numerous monographs, magazine arti- 

 cles, etc. The work will also be invaluable to the working 

 mycologist and pathologist. 



THE MACMILLAN COMPANY 



Publishers 64-66 Fiftli Avenue New York 



